基于分布式协同模式的MTI滤波器设计与仿真  

Design and simulation of MTI filter based on distributed cooperation mode

作　　者：刘佳[1] 唐小明[1] 宋洪良 LIU Jia;TANG Xiaoming;SONG Hongliang(Naval Aeronautical and Astronautical University,Yantai 264001,China)

机构地区：[1]海军航空工程学院,山东烟台264001

出　　处：《现代电子技术》2017年第17期79-82,共4页Modern Electronics Technique

摘　　要：为了利用双(多)基地雷达收发分置的体制优势,在传统工作模式的基础上设计一种分布式协同的工作环境。为了在接收机处有效滤除杂波,采用设计动目标显示(MTI)滤波器的方法进行杂波抑制。在模型设计上选择切比雪夫等波纹逼近理想滤波器的方法设计滤波器模型。由于实际杂波环境和方位角会引起杂波功率谱变化,在结构设计上通过一个固定杂波多普勒滤波器实现对高强度地物回波的滤除,级联一个具有准自适应功能的滤波器组,实现对运动杂波的抑制。仿真结果表明该滤波器对雷达信号中的杂波具有较好的抑制作用。In order to make use of the advantages of the receiving and transmitting bistatic system for double or multi-baseradars,a distributed cooperation working environment was designed on the basis of the traditional working mode.In order to filter the clutter at receiver effectively,the method for designing the moving target display(MTI)filter is used to suppress the clutter.The method of Chebyshev equal ripple approximate ideal filter is selected to design the filter model.Since the actual clutterenvironment and azimuth angle may lead to the change of clutter power spectrum,a fixed clutter Doppler filter is adopted in thestructure design to filter the high-intensity ground echo,and then a filter bank with quasi-adaptive function is cascaded to suppress the moving clutter.The simulation results show that the filter can suppress the clutter in radar signal effectively.

关 键 词：分布式协同 杂波抑制 动目标显示 自适应滤波 

分 类 号：TN958-34[电子电信—信号与信息处理]